Waterproof insulation's roof structure

The utility model discloses a waterproof insulation's roof structure, the sealed use of locating to exhaust duct among the prior art that is in a period later receives the problem that takes place rain water leakage when destroying, provides following technical scheme, is equipped with the air discharge duct that the end originates in the direction extension of the past parapet top surface of topsurface on polycrystalline substance layer in the parapet, is equipped with the intercommunication between each structural layer on the polycrystalline substance layer on roof the transverse groove ofair discharge duct, the top of air discharge duct is equipped with the way that the piece has reduced rainwater infiltration that hides that prevents water spilling entering, makes roof structure compacter, and the top of air discharge duct is equipped with the piece that hides that prevents water spilling entering, can prevent simultaneously that the water spilling from getting into the air discharge duct carminative, an